Switch to uniffi-bindgen-kotlin-jni

[bendk]

Pin our UniFFI crates to the head of
https://github.com/bendk/uniffi-rs/tree/0.32-uniffi-bindgen-kotlin-jni. That branch is 0.32.1, with the uniffi_parse_rs and uniffi-bindgen-jni changes cherry-picked in.

The idea here is to use uniffi-bindgen-kotlin-jni without doing a UniFFI release. This way we can test things out without waiting for Glean to take that new release. I tested this with a local build and it worked for me.

There's a decent chance that we'll have to back this out because it creates issues, so let's not merge this until:

• The Glean update has had time to settle down
• We're out of the engineering summit

Pull Request checklist

• Breaking changes: This PR follows our breaking change policy
  • This PR follows the breaking change policy:
    • This PR has no breaking API changes, or
    • There are corresponding PRs for our consumer applications that resolve the breaking changes and have been approved
• Quality: This PR builds and tests run cleanly
  • Note:
    • For changes that need extra cross-platform testing, consider adding [ci full] to the PR title.
    • If this pull request includes a breaking change, consider cutting a new release after merging.
• Tests: This PR includes thorough tests or an explanation of why it does not
• Changelog: This PR includes a changelog entry in CHANGELOG.md or an explanation of why it does not need one
  • Any breaking changes to Swift or Kotlin binding APIs are noted explicitly
• Dependencies: This PR follows our dependency management guidelines
  • Any new dependencies are accompanied by a summary of the due diligence applied in selecting them.

[mhammond]

probably do need the dependency check job fixed. Might also be mildly better if the commit was on a branch on origin rather than yours, but not a big deal either way

[bendk]

probably do need the dependency check job fixed. Might also be mildly better if the commit was on a branch on origin rather than yours, but not a big deal either way

Good point, let's use #7607 instead which is for a mozilla branch.